单项选择题

According to many sources, the safest drinking water is from a piped supply.

A. many resources
B. a great deal of information
C. many sausages
D. a great deal of salvage
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The room was filled with the scent, of flowers.
A. atmosphere
B. pot
C. feature
D. odor
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The farmers worried about the lack of rain.
A. shortage
B. drift
C. woe
D. burden
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